Measurement of physical properties of the copper-polytellurides

Nathan D. Lowhorn, Rhonda Patschke, Mercouri G Kanatzidis, Terry M. Tritt

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

The anisotropic, two-dimensional structure of a group of quaternary copper polytellurides, A2BaCu8Te10, (where A = Rb, Cs or K) appears to fit the description for a `phonon-glass electron-crystal' which is proposed to be a desirable feature of a good thermoelectric material. The structure contains Cu8Te12 pentagonal dodecahedral cages filled with divalent Ba atoms which have the ability to `rattle' within the cages. The resistivity, thermopower and heat capacity of polycrystalline copper-polytellurides have been measured over a broad range of temperatures. Electrical resistivity and thermopower were measured from 4 K to 310 K with room temperature values of approximately 1.7-5.6 mΩ-cm and 30-54 μV/K respectively. Heat capacity was measured from 2 K to 300 K giving Debye temperatures of approximately 310-355 K. Substitutional doping experiments associated with the Te sites in the structure as well as the Ba sites have been done, and the results on the transport measurements are presented. Thermal conductivity and Hall coefficient measurements have also been made on selected samples.

Original languageEnglish
Title of host publicationInternational Conference on Thermoelectrics, ICT, Proceedings
PublisherIEEE
Pages424-427
Number of pages4
Publication statusPublished - 1999
Event18th International Conference on Thermoelectrics (ICT'99) - Baltimore, MD, USA
Duration: Aug 29 1999Sep 2 1999

Other

Other18th International Conference on Thermoelectrics (ICT'99)
CityBaltimore, MD, USA
Period8/29/999/2/99

Fingerprint

Thermoelectric power
Specific heat
Physical properties
Copper
Debye temperature
Thermal conductivity
Doping (additives)
Glass
Atoms
Temperature
Crystals
Electrons
Experiments

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Lowhorn, N. D., Patschke, R., Kanatzidis, M. G., & Tritt, T. M. (1999). Measurement of physical properties of the copper-polytellurides. In International Conference on Thermoelectrics, ICT, Proceedings (pp. 424-427). IEEE.

Measurement of physical properties of the copper-polytellurides. / Lowhorn, Nathan D.; Patschke, Rhonda; Kanatzidis, Mercouri G; Tritt, Terry M.

International Conference on Thermoelectrics, ICT, Proceedings. IEEE, 1999. p. 424-427.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Lowhorn, ND, Patschke, R, Kanatzidis, MG & Tritt, TM 1999, Measurement of physical properties of the copper-polytellurides. in International Conference on Thermoelectrics, ICT, Proceedings. IEEE, pp. 424-427, 18th International Conference on Thermoelectrics (ICT'99), Baltimore, MD, USA, 8/29/99.
Lowhorn ND, Patschke R, Kanatzidis MG, Tritt TM. Measurement of physical properties of the copper-polytellurides. In International Conference on Thermoelectrics, ICT, Proceedings. IEEE. 1999. p. 424-427
Lowhorn, Nathan D. ; Patschke, Rhonda ; Kanatzidis, Mercouri G ; Tritt, Terry M. / Measurement of physical properties of the copper-polytellurides. International Conference on Thermoelectrics, ICT, Proceedings. IEEE, 1999. pp. 424-427
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